[Olivier] told us about this fantastic project where he built his own RC airplane. The airplane itself is nothing special, it is the controls that are worth paying attention to. He used an Arduino Diecemilla , some XBee transceivers, and a SparkFun Wee. The main site is a general overview, but there are links to more detailed breakdowns of how to build some of the parts. There are several videos of him flying it as well.
The Department of Defense wants you to design a pack of robots that would hunt humans. Or, as they put it, “search for and detect a non-cooperative human subject”. While the project brings to mind Terminators, there are also non-terrifying uses for these robots, including search and rescue missions. The robots should be about 100 kilograms or less, provide immediate feedback, and defer to a human operator in the event of a difficult decision. This project presents some interesting challenges for robot designers. They’ll need to consider several key issues, like robot cooperation and decision-making abilities. We knew it was only a matter of time before the DoD turned the Grand Challenge into Death Race.
[via Warren Ellis]
[Bre] dug up this excellent robot fish prototype project. The PPF-O9 has three servos. One on the forward fins to control depth, one on the middle joint, and one final one drives the tail fin. The battery box is mounted to the underside. The control scheme is interesting: the right stick controls left/right and up/down while the left stick controls the frequency and amplitude of the motion. They say the robot is fairly stable, but swimming and turning can be slow. They’ve included CAD files for almost every component to help you with your own designs.
In June, we highlighted a robofish designed for swarm communication.
This hexapod was sent to us on the tipline from [Jamie]. If you want to take the six-legged robot a bit farther than our earlier posts, here and here, this is the hexapod for you. The structural pieces were modeled, and cut out of 3mm thick plywood using CNC. He used TO-220 transistor nylon isolation mounts for the bearings, and bolts and locknuts at each joints. The main body houses eight servos, six for the legs and two for a camera head pan and tilt. There are another six servos, one for each leg, to lift the feet. The whole thing is controlled by an Atmel AT90S8515 clocked at 8 Mhz. The code was compiled using WinAVR free GCC GNU-C. He uses a PlayStation controller to help debug the walk cycles, and change parameters as needed. Watch a video after the jump.
Continue reading “Six Legged Crawler”
[youtube=http://www.youtube.com/watch?v=oUH3m6ZyW-g]
We don’t know whether to be horrified, or elated at the sight of this dancing hexapod. Yeah, it isn’t a hack. It isn’t even a build article. But if there is ever a time to post a six legged dancing head with glowing red eyes, it is today, Halloween. Enjoy.
[via BotJunkie]
The Hex Bug, at $10, proves to be a perfect platform for building your own droid. Out of the box, it has pretty limited functionality. It walks forward until its antennae bump something, then it backs up and turns left. Applied inspirations shows us how you can replace the bug’s brains with a microcontroller to give it much more life. Instead of hacking into the existing electronics, they chose to completely replace the board. The final result, though still only able to turn one direction, is much more robust. They discuss the ability to add numerous sensors as well as pre program different behaviours and personalities.
European researchers in the I-SWARM project are hard at work developing small, autonomous robots that can work together and communicate to perform different functions. They successfully built two types of robots: the I-SWARM, and the Jasmine robots. The I-SWARM robots are three millimeters in size, are powered by a solar cell, and move by vibration. The Jasmine robots are the size of two-Euro coins, have small wheels, and are powered by battery. These tiny robots have several advantages over their bulky predecessors, such as high redundancy, greater flexibility, and the ability to manage tough terrain. They could even be used to repair larger robots. They also come with distinct challenges. Because of their minuscule size, programming memory is necessarily limited, and the team had to come up with special algorithms to manage and control the machines. Though they haven’t been able to meet their goal of making a thousand of them, the researchers are hopeful and confident about their abilities to mass produce the robots cheaply.
[via io9]
